/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:22,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:22,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:22,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:22,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:22,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:22,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:22,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:22,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:22,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:22,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:22,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:22,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:22,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:22,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:22,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:22,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:22,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:22,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:22,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:22,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:22,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:22,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:22,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:22,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:22,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:22,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:22,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:22,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:22,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:22,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:22,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:22,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:22,756 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:22,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:22,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:22,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:22,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:22,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:22,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:22,758 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:23,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:23,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:23,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:23,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:23,205 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:23,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2021-02-24 00:16:23,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23810ed68/b645425fc6ba45d38b6c7f52624033fc/FLAG7a5e88d34 [2021-02-24 00:16:23,969 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:23,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2021-02-24 00:16:23,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23810ed68/b645425fc6ba45d38b6c7f52624033fc/FLAG7a5e88d34 [2021-02-24 00:16:24,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23810ed68/b645425fc6ba45d38b6c7f52624033fc [2021-02-24 00:16:24,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:24,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:24,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:24,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:24,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:24,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34732df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24, skipping insertion in model container [2021-02-24 00:16:24,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:24,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:24,636 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c[589,602] [2021-02-24 00:16:24,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:24,696 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:24,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c[589,602] [2021-02-24 00:16:24,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:24,739 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:24,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24 WrapperNode [2021-02-24 00:16:24,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:24,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:24,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:24,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:24,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... [2021-02-24 00:16:24,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:24,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:24,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:24,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:24,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:25,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:25,356 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-24 00:16:25,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:25 BoogieIcfgContainer [2021-02-24 00:16:25,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:25,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:25,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:25,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:25,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:24" (1/3) ... [2021-02-24 00:16:25,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763dfb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:25, skipping insertion in model container [2021-02-24 00:16:25,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:24" (2/3) ... [2021-02-24 00:16:25,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763dfb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:25, skipping insertion in model container [2021-02-24 00:16:25,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:25" (3/3) ... [2021-02-24 00:16:25,368 INFO L111 eAbstractionObserver]: Analyzing ICFG sina5f.c [2021-02-24 00:16:25,375 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:25,380 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:25,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:25,422 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:25,422 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:25,422 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:25,422 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:25,422 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:25,423 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:25,423 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:25,423 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2021-02-24 00:16:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 00:16:25,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:25,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:25,458 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:25,474 INFO L82 PathProgramCache]: Analyzing trace with hash 86213903, now seen corresponding path program 1 times [2021-02-24 00:16:25,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:25,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128493084] [2021-02-24 00:16:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:25,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:25,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:25,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:25,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:25,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:25,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:25,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:25,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:25,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128493084] [2021-02-24 00:16:25,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:25,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:25,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305380590] [2021-02-24 00:16:25,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:25,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:25,917 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2021-02-24 00:16:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:26,247 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2021-02-24 00:16:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:26,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-02-24 00:16:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:26,266 INFO L225 Difference]: With dead ends: 167 [2021-02-24 00:16:26,266 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 00:16:26,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 00:16:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-02-24 00:16:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-24 00:16:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2021-02-24 00:16:26,359 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 46 [2021-02-24 00:16:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:26,360 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2021-02-24 00:16:26,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2021-02-24 00:16:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 00:16:26,365 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:26,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:26,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:26,367 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash -218883754, now seen corresponding path program 1 times [2021-02-24 00:16:26,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292195418] [2021-02-24 00:16:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:26,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:26,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:26,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:26,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:26,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:26,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:26,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:26,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292195418] [2021-02-24 00:16:26,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:26,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:26,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392377939] [2021-02-24 00:16:26,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:26,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:26,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:26,555 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 5 states. [2021-02-24 00:16:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:26,827 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2021-02-24 00:16:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:26,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-02-24 00:16:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:26,831 INFO L225 Difference]: With dead ends: 173 [2021-02-24 00:16:26,832 INFO L226 Difference]: Without dead ends: 123 [2021-02-24 00:16:26,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:16:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-24 00:16:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2021-02-24 00:16:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-24 00:16:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-02-24 00:16:26,856 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 46 [2021-02-24 00:16:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:26,857 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-02-24 00:16:26,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-02-24 00:16:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 00:16:26,860 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:26,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:26,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:26,861 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1032022828, now seen corresponding path program 1 times [2021-02-24 00:16:26,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:26,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782737449] [2021-02-24 00:16:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:26,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:27,055 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:27,124 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:27,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:27,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:27 BoogieIcfgContainer [2021-02-24 00:16:27,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:27,261 INFO L168 Benchmark]: Toolchain (without parser) took 2894.81 ms. Allocated memory was 156.2 MB in the beginning and 217.1 MB in the end (delta: 60.8 MB). Free memory was 132.3 MB in the beginning and 138.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 56.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:27,264 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:27,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.15 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:27,267 INFO L168 Benchmark]: Boogie Preprocessor took 49.42 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:27,270 INFO L168 Benchmark]: RCFGBuilder took 565.94 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 128.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:27,275 INFO L168 Benchmark]: TraceAbstraction took 1898.23 ms. Allocated memory was 156.2 MB in the beginning and 217.1 MB in the end (delta: 60.8 MB). Free memory was 128.1 MB in the beginning and 138.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:27,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.15 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.42 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 565.94 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 128.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1898.23 ms. Allocated memory was 156.2 MB in the beginning and 217.1 MB in the end (delta: 60.8 MB). Free memory was 128.1 MB in the beginning and 138.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={13:0}] [L29] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={13:0}] [L30] long long *b = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, b={11:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L32] sum[0] = 0 VAL [\old(N)=0, a={-1:0}, b={11:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={11:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L33] COND TRUE i